TPS40197 Datasheet | Texas Instruments

Features - 1 Input Voltage Range: 4.5 V to 14 V - 4-Bit Dynamic VID-On-The-Fly Support - VID Programmable Output Voltage with Programmable Transition Rate - Fixed Switching Frequency of 520 k Hz - Selectable Low-Side (Three Settings) and Fixed High-Side Thermally pensated Overcurrent Protection - Power Good Indicator - Internal 5-V Regulator - Voltage Mode Control - Internally Fixed 5.5-ms Soft-Start Time - Prebias Output Safe - Thermal Shutdown at 140°C - 16-Pin QFN Package 2 Applications - Smart-Reflex™ DSPs - POL Modules - Tele 3 Description The TPS40197 is a synchronous buck controller that operates from 4.5 V to 14 V input supply nominally. The controller implements voltage-mode control architecture with the switching frequency fixed at 520 k Hz. The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a pact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. The TPS40197 integrates the PWM control and 4-bit VID interface in a single chip to allow seamless onthe-fly VID changes with programmable transition rate. It provides a simple power solution for Smart Reflex™ DSP cores. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) VQFN (16) 4.50 mm × 3.50 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Circuit SD V VID3 VID2 VID1 VID0 HOST 1 VID1 2 VID0 16 VID2 VID3 15 3 REF HDRV...